Etymograph

English

thesaurosis

Thesaurosis comes from Ancient Greek θησαυρός ‘storehouse’, from τίθημι ‘to put, place, deposit, set, assume, settle’, and ultimately from Proto-Indo-European *dʰeh₁-.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*dʰeh₁-1‘to put, place’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*dʰé-dʰeh₁-ti1reconstructed
  3. Proto-Hellenicc. 2200–1600 BCE*t(e/i)tʰēmi1reconstructed
  4. Ancient Greekc. 800–300 BCEτίθημι2títhēmi‘to put, place, deposit, set, assume, settle’
  5. Ancient Greekc. 800–300 BCEθησαυρός3thēsaurós‘storehouse’
  6. Englishtodaythesaurosis3

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Ancient Greek τίθημι
  2. 2 Wiktionary, Ancient Greek θησαυρός, which cites Beekes
  3. 3 Wiktionary, English thesaurosis

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*dʰeh₁-Wiktionary, Ancient Greek τίθημι‘to put, place’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*dʰé-dʰeh₁-tiWiktionary, Ancient Greek τίθημιreconstructed
  3. Proto-Hellenicc. 2200–1600 BCE*t(e/i)tʰēmiWiktionary, Ancient Greek τίθημιreconstructed
  4. Ancient Greekc. 800–300 BCEτίθημιWiktionary, Ancient Greek θησαυρός, which cites Beekestíthēmi‘to put, place, deposit, set, assume, settle’
  5. Ancient Greekc. 800–300 BCEθησαυρόςWiktionary, English thesaurosisthēsaurós‘storehouse’
  6. EnglishtodaythesaurosisWiktionary, English thesaurosis

Linked words

through Proto-Indo-European *dʰeh₁- ‘to put, place’

do, fact, deal, hot, fair, defense, fan, benefit, fashion, mid, feature, defence, custom, sufficient, theme, ethnic, defendant, feast, ethical, doom, deed, synthetic, theology, aesthetic, dis, auditorium, demi, ethic, deem, auditor, spade, forfeit, feral, fanatic, familial, medial, atheist, medallion, prefect, certify, 122 more

through Proto-Hellenic *t(e/i)tʰēmi

thesis, 12 more

through Ancient Greek τίθημι ‘to put, place, deposit, set, assume, settle’

tick, treasurer, synthesis, epithet, 14 more

through Ancient Greek θησαυρός ‘storehouse’

treasury, treasure, 2 more

Today it means

noun A lung storage disease thought to be caused by inhalation of hair spray.

Sources

Sources: Wiktionary, “thesaurosis”; the older steps come from the Wiktionary entries for Ancient Greek τίθημι, Ancient Greek θησαυρός. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / Proto-Indo-European *dʰeh₁- / thesaurosis

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